X-Git-Url: https://glassweightruler.freedombox.rocks/gitweb/Ventoy.git/blobdiff_plain/ef40780f20635da1ad36b13960521bfa3100949f..c8b2cca7c2668c68bdbb0551402abdff99e7f43e:/VtoyTool/vtoydump.c

diff --git a/VtoyTool/vtoydump.c b/VtoyTool/vtoydump.c
index 1c620d3..ff3a4d2 100644
--- a/VtoyTool/vtoydump.c
+++ b/VtoyTool/vtoydump.c
@@ -120,7 +120,9 @@ typedef struct ventoy_os_param
 
     uint64_t  vtoy_reserved[4];     // Internal use by ventoy
 
-    uint8_t   reserved[31];
+    uint8_t   vtoy_disk_signature[4];
+    
+    uint8_t   reserved[27];
 }ventoy_os_param;
 
 #pragma pack()
@@ -155,6 +157,16 @@ static int vtoy_check_os_param(ventoy_os_param *param)
     
     if (memcmp(&param->guid, &vtoy_guid, sizeof(ventoy_guid)))
     {
+        uint8_t *data1 = (uint8_t *)(&param->guid);
+        uint8_t *data2 = (uint8_t *)(&vtoy_guid);
+        
+        for (i = 0; i < 16; i++)
+        {
+            if (data1[i] != data2[i])
+            {
+                debug("guid not equal i = %u, 0x%02x, 0x%02x\n", i, data1[i], data2[i]);
+            }
+        }
         return 1;
     }
 
@@ -208,6 +220,11 @@ static void vtoy_dump_os_param(ventoy_os_param *param)
     printf("param->vtoy_disk_guid = %02x %02x %02x %02x\n", 
         param->vtoy_disk_guid[0], param->vtoy_disk_guid[1], 
         param->vtoy_disk_guid[2], param->vtoy_disk_guid[3]);
+    
+    printf("param->vtoy_disk_signature = %02x %02x %02x %02x\n", 
+        param->vtoy_disk_signature[0], param->vtoy_disk_signature[1], 
+        param->vtoy_disk_signature[2], param->vtoy_disk_signature[3]);
+    
     printf("param->vtoy_disk_size = %llu\n", (unsigned long long)param->vtoy_disk_size);
     printf("param->vtoy_disk_part_id = %u\n", param->vtoy_disk_part_id);
     printf("param->vtoy_disk_part_type = %u\n", param->vtoy_disk_part_type);
@@ -221,7 +238,7 @@ static void vtoy_dump_os_param(ventoy_os_param *param)
     printf("\n");
 }
 
-static int vtoy_get_disk_guid(const char *diskname, uint8_t *vtguid)
+static int vtoy_get_disk_guid(const char *diskname, uint8_t *vtguid, uint8_t *vtsig)
 {
     int i = 0;
     int fd = 0;
@@ -234,6 +251,9 @@ static int vtoy_get_disk_guid(const char *diskname, uint8_t *vtguid)
     {
         lseek(fd, 0x180, SEEK_SET);
         read(fd, vtguid, 16);
+        
+        lseek(fd, 0x1b8, SEEK_SET);
+        read(fd, vtsig, 4);
         close(fd);
 
         debug("GUID for %s: <", devdisk);
@@ -370,13 +390,14 @@ static int vtoy_find_disk_by_size(unsigned long long size, char *diskname)
     return rc;    
 }
 
-static int vtoy_find_disk_by_guid(uint8_t *guid, char *diskname)
+static int vtoy_find_disk_by_guid(ventoy_os_param *param, char *diskname)
 {
     int rc = 0;
     int count = 0;
     DIR* dir = NULL;
     struct dirent* p = NULL;
     uint8_t vtguid[16];
+    uint8_t vtsig[16];
 
     dir = opendir("/sys/block");
     if (!dir)
@@ -393,8 +414,9 @@ static int vtoy_find_disk_by_guid(uint8_t *guid, char *diskname)
         }
     
         memset(vtguid, 0, sizeof(vtguid));
-        rc = vtoy_get_disk_guid(p->d_name, vtguid);
-        if (rc == 0 && memcmp(vtguid, guid, 16) == 0)
+        rc = vtoy_get_disk_guid(p->d_name, vtguid, vtsig);
+        if (rc == 0 && memcmp(vtguid, param->vtoy_disk_guid, 16) == 0 && 
+            memcmp(vtsig, param->vtoy_disk_signature, 4) == 0)
         {
             sprintf(diskname, "%s", p->d_name);
             count++;
@@ -420,11 +442,11 @@ static int vtoy_print_os_param(ventoy_os_param *param, char *diskname)
     cnt = vtoy_find_disk_by_size(param->vtoy_disk_size, diskname);
     if (cnt > 1)
     {
-        cnt = vtoy_find_disk_by_guid(param->vtoy_disk_guid, diskname);
+        cnt = vtoy_find_disk_by_guid(param, diskname);
     }
     else if (cnt == 0)
     {
-        cnt = vtoy_find_disk_by_guid(param->vtoy_disk_guid, diskname);
+        cnt = vtoy_find_disk_by_guid(param, diskname);
         debug("find 0 disk by size, try with guid cnt=%d...\n", cnt);
     }
 
@@ -452,17 +474,19 @@ static int vtoy_check_device(ventoy_os_param *param, const char *device)
 {
     unsigned long long size; 
     uint8_t vtguid[16] = {0};
+    uint8_t vtsig[4] = {0};
 
     debug("vtoy_check_device for <%s>\n", device);
 
     size = vtoy_get_disk_size_in_byte(device);
-    vtoy_get_disk_guid(device, vtguid);
+    vtoy_get_disk_guid(device, vtguid, vtsig);
 
     debug("param->vtoy_disk_size=%llu size=%llu\n", 
         (unsigned long long)param->vtoy_disk_size, (unsigned long long)size);
 
     if ((param->vtoy_disk_size == size || param->vtoy_disk_size == size + 512) && 
-        memcmp(vtguid, param->vtoy_disk_guid, 16) == 0)
+        memcmp(vtguid, param->vtoy_disk_guid, 16) == 0 &&
+        memcmp(vtsig, param->vtoy_disk_signature, 4) == 0)
     {
         debug("<%s> is right ventoy disk\n", device);
         return 0;